Energy Formula:
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Definition: This calculator converts power in kilowatts (kW) to energy in kilowatt-hours (kWh) based on the time duration of power consumption.
Purpose: It helps determine electrical energy consumption for billing, system sizing, or energy efficiency analysis.
The calculator uses the formula:
Where:
Explanation: Energy is simply power multiplied by time. 1 kWh equals 1 kW of power used for 1 hour.
Details: Utility companies bill based on kWh consumption. Understanding this conversion helps in energy management and cost estimation.
Tips: Enter the power in kW and time in hours. Both values must be positive numbers.
Q1: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), while kWh measures energy (total consumption over time).
Q2: How do I convert kWh back to kW?
A: Divide kWh by hours to get kW (P = E/t).
Q3: What if my device power is in watts?
A: Convert watts to kW by dividing by 1000 (1 kW = 1000 W) before using this calculator.
Q4: Can I use this for solar panel calculations?
A: Yes, to estimate daily energy production: multiply panel kW rating by peak sun hours.
Q5: How accurate is this calculation?
A: It's precise for constant power draw. For variable loads, use average power over time.